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Cape Government Railways class 4 4-4-2
South African class 04 4-4-2
South Africa | 1897 | 6 produced
The photo shows the overwhelming resemblance to the JNR 6600
The photo shows the overwhelming resemblance to the JNR 6600
„Die Schönsten der Schiene, die Geschichte der Atlantic” von Wilhelm Reuter

Almost identical to the Japanese Atlantics with the JNR numbers 6600 to 6623 were the six locomotives that the Cape Government Railways received from Baldwin in 1897. The order came about because the CGR could not order from the British manufacturers as usual due to strikes and Baldwin had already developed a locomotive that largely met the requirements. Only the heating surface was slightly enlarged and the engine had to be converted to South African Johnston couplers, which is why a lower purchase price could be offered. They were assigned to Class 4, which also included 4-6-0 locomotives.

It is said that the chief engineer of the CGR, H.M. Beatty, was impressed by the robust construction and he valued the merits of the bar frame so much that his later designs also all got a bar frame. After the founding of the South African Union in 1910 and the merger of the railway administrations, it became apparent, as with the Japanese sisters, that the locomotives had too little adhesive weight to reliably start heavy trains. They were therefore classified as obsolete, but remained in use on their main route until 1931.

General
Built1897
ManufacturerBaldwin
Axle config4-4-2 (Atlantic) 
Gauge3 ft 6 in (Cape gauge)
Dimensions and Weights
Length53 ft 5 1/2 in
Wheelbase22 ft 6 in
Fixed wheelbase6 ft
Total wheelbase45 ft 11 1/2 in
Service weight100,354 lbs
Adhesive weight53,197 lbs
Total weight167,772 lbs
Axle load27,205 lbs
Water capacity2,882 us gal
Fuel capacity12,880 lbs (coal)
Power
Power sourcesteam
Estimated power800 hp (597 kW)
Optimal speed33 mph
Starting effort15,387 lbf
Power Plant
Driver diameter56 in
Boiler pressure180 psi
Expansion typesimple
Cylinderstwo, 16 x 22 in
Boiler
Grate area30 sq ft
Firebox area98 sq ft
Tube heating area1,462 sq ft
Evaporative heating area1,560 sq ft
Total heating area1,560 sq ft
Calculated Values
steam locomotive
passenger
last changed: 03/2022
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